Question

which example best describes the influence of genetic factors? (1 point)
a shrub with good access to sunlight is taller than other shrubs located in shaded areas.
a horse is the same size as its parents and similar height to other horses of the same breed that it lives with on a farm.
a corn plant is the same height as another corn plant of a different variety.
the adult offspring of a pair of deer is shorter than its parents and obtained fewer nutrients when it was younger.

Explanation:

• Option A: Sunlight (environmental factor) causes the height difference, not genetics.
• Option B: A horse being same size as parents and same - breed horses shows inheritance of traits (height) from genes, as same - breed horses have similar genetic makeup.
• Option C: Different varieties have different genetics, so same height here is not due to genetic influence (different varieties would have different genetic determinants for height).
• Option D: Nutrient availability (environmental factor) is the cause of the deer's shorter height, not genetics.

Answer:

B. A horse is the same size as its parents and similar height to other horses of the same breed that it lives with on a farm.